This is one of the most used online shopping site in india.
Customer service:the best part of this site is its service upto 3-5 days your order will come and the way of talking of there delivery boy are very good.
Product quality: the product quality is very good . I have also ordered my xiaomi redmi 3s through this site and the ordered has come within 4 days and the product is very good there is no fault in anymanner in the product quality.
The product quality is same as shown in that site.
App and website: the app is much faster than the website and the during stocks I should prefer a flipkart app than website.
Reliability: I think flipkart is the most reliable site as compared to other there is lower rates sometime on other site but there is a chances of duplicacy because I know this thing my friend has order cricket bat from other site and they handed him a duplicate product so I should prefer you flipkart as compared to other websites